fnando/i18n-js — pull request #274 by bluej100 (2014-11-12 06:06:36+00:00)
Title: Interpolate empty string rather than error message for explicit null

In interpolating a string, if a placeholder isn't passed in the options at all, showing an error message is appropriate. If the placeholder is passed and its value is null, though, I think it's better to just use the empty string. This avoids showing a cryptic error message to end users.